Carrying mechanism to optical pickup of a traverse of optical disc apparatus

ABSTRACT

A carrying mechanism to optical pickup of a traverse of optical disc apparatus, comprises: four bar holders, connected to a traverse; two sliding bars, which each with its both ends is connectedly inserted into a receiving chamber of two opposite bar holders respectively; and an optical pickup head which both lateral ends are connectedly sleeved on one said sliding bar respectively and which is moveable back and froth on said sliding bar; wherein said bar holder is integrally formed and provided with a elastic support capably against said sliding bar. Therefore, the bar holder of the invention, with less working parts for the cost capably reduced, with the assembly more easily made and with the precision demanded to working parts not too high, may promote the level of the product used.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to an optical disc apparatus, and more particularly to a carrying mechanism to optical pickup of a traverse of optical disc apparatus.

[0003] 2. Description of Related Art

[0004] An optical pickup generally set in optical disc apparatus is used to read those data stored on optical disc or store data into optical disc. Referring to FIG. 1 and FIG. 2, the traverse 10 of general optical disc apparatus is provided with three adjustable bar holder 20 and one stationary bar holder 21; an optical pickup 11, installed on an optical pickup head 12 which both lateral ends are respectively sleeved on a sliding bar 13 so that the optical pickup head 12 is removable back and froth on the sliding bar 13, is therefore able to read data from or store data to the optical disc relatively set above; which both ends of one sliding bar 13 are respectively connected to the stationary bar holder 21 and the opposite adjustable bar holder 20, and both ends of the other sliding bar 13 are respectively connected to two relative adjustable bar holders 20; the adjustable bar holder 20 shown as FIG. 2 comprises a top plate 22, a lower base seat 23 and a spring 24; the lower base seat 23 is provided with a receiving chamber 231 in which the spring 24 is installed and the sliding bar 13 is freely jointed inside too; the top plate 22 and the lower base seat 23 are respectively fastened to both lateral ends of the traverse 10 with fixing screw 25; an adjustable screw 26 jointly screwed the top plate 20 and lower base seat 23 together is capably extended into the chamber 231 of the lower base seat 23 to push the sliding bar 13 directly removed for its height adjustable. A turning table 14 shown as FIG. 1 is connected on the traverse 10 to spin an optical disc rotated. Both parallelism of the optical pickup 11 and height of the optical pickup 11 distanced to the turning table 14 are adjustable when the height of each sliding bar 13 freely jointed inside the three adjustable bar holders 20 is respectively adjusted.

[0005] But, it is so inconveniently for the spring 24 to make an assembly with the adjustable bar holder 20, due to the spring 24 being a tiny and small part necessarily set into the receiving chamber 231 of the adjustable bar holder 20, that the assembling structure of the carrying mechanism conventionally used on optical pickup of traverse of optical disc apparatus is valuably made an improvement for assembling easily.

SUMMARY OF THE INVENTION

[0006] The invention is invented to provide a novel carrying mechanism to optical pickup of a traverse of optical disc apparatus with less working parts for the cost capably reduced, with the assembly more easily made and with the precision demanded to working parts not too high.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The invention is description in detail with reference to the following drawings, wherein like numerals represent like elements:

[0008]FIG. 1 is an illustrated drawing to show the structure of a conventional traverse of optical disc apparatus.

[0009]FIG. 2 is a cross-sectional drawing of a adjustable bar holder of the conventional traverse of optical disc apparatus illustrated on FIG. 1.

[0010]FIG. 3 is an illustrated drawing to show the structure of the traverse of the invention capably used on an optical disc apparatus.

[0011]FIG. 4 is a solid diagram of a bar holder of the traverse of the invention illustrated on FIG. 3.

[0012]FIG. 5 is a cross-sectional drawing of a bar holder of the traverse of the invention illustrated on FIG. 3.

[0013]FIG. 6 is a cross-sectional drawing of a bar holder of the traverse of another embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0014] Referring to FIG. 3, a traverse 30 of the invention is provided with four bar holders 40. An optical pickup head 32 is installed with which both lateral ends are connectedly sleeved on one sliding bar 33 respectively, and each said sliding bar 33 is installed with which both ends are connectedly sleeved on two opposite bar holders 40 respectively.

[0015] Referring to FIG. 4 and FIG. 5, each said bar holder 40 is integrally formed which top is provided with an elastic support 41. A receiving chamber 42 is formed under said elastic support 41 and a recess 43 passed through said receiving chamber 42 is formed at front end of said bar holder 40. Therefore, both ends of said sliding bar 33 are freely inserted through said recess 43 into said receiving chamber 42 of said bar holder 40 shown as FIG. 5.

[0016] Each said bar holder 40 are secured on said traverse 30 with a fixing screw 44. An adjustable screw 45 used to adjust the height of said sliding bar 33 is screwed through said traverse 30 into said receiving chamber 42 of said bar holder 40 and against said sliding bar 33 to keep an optical pickup 31 with proper parallelism and distance to a turning table 34 shown as FIG. 3.

[0017] Referring to FIG. 6, another embodiment of said bar holder 40 of the invention is unnecessary of using said adjustable screw to adjust the height of said sliding bar 33, if the precision of making said bar holder 40 is good enough to a level, but said sliding bar 33 is directly set on the top end 431 of said recess 43 and securely suppressed by said elastic support 41 with its elasticity.

[0018] Accordingly, said bar holder 40 of the invention may satisfy the demand of working parts and cost effectively reduced due to said elastic support 41 integrally formed to substitute for said spring 24 necessarily used in conventional adjustable bar holder 20 shown as FIG. 2. Said bar holder 40 of the invention is more easily made an assembly than conventional adjustable bar holder 20 too, therefore, the manpower and cost may be saved much more.

[0019] In additional, said bar holder of the invention and one conventionally used stationary bar holder 21 shown as FIG. 1 can be used together to secure both ends of said sliding bar. Under this kind of combination, the height of said sliding bar is still adjustable due to adjusting said adjustable screw of said bar holder located at one ends of said sliding bar. Moreover, said bar holder of the invention and said traverse may be integrally formed as one piece of working parts to save more assembling cost.

[0020] The scope of this disclosed invention is not limited to the embodiment illustrated as above. Which scope explained and defined by claims may include all changeable equivalents more particularly only changed in easy amendment or variation. 

What is claimed is:
 1. A carrying mechanism to optical pickup of a traverse of optical disc apparatus, comprises an optical pickup head which both lateral ends are connectedly sleeved on one sliding bar respectively; two sliding bars, which each with its both ends is connectedly sleeved on two opposite bar holders; and four bar holders connected to a traverse; wherein at least one of four said bar holders is integrally formed, which is provided with an elastic support at its top, a receiving chamber formed under said elastic support, and a recess formed at front end and passed through said receiving chamber, to provide said sliding bar freely inserted through said recess into said receiving chamber of said integrally formed bar holder.
 2. The carrying mechanism to optical pickup of a traverse of optical disc apparatus as defined by claim 1, wherein said integrally formed bar holder is with a fixing screw connected to said traverse.
 3. The carrying mechanism to optical pickup of a traverse of optical disc apparatus as defined by claim 1, wherein said integrally formed bar holder and said traverse are integrally formed as one piece of working parts.
 4. The carrying mechanism to optical pickup of a traverse of optical disc apparatus as defined by claim 1, wherein an adjustable screw used to adjust the height of said sliding bar is screwed through said traverse into said receiving chamber of said integrally formed bar holder and against said sliding bar.
 5. The carrying mechanism to optical pickup of a traverse of optical disc apparatus as defined by claim 2, wherein an adjustable screw used to adjust the height of said sliding bar is screwed through said traverse into said receiving chamber of said integrally formed bar holder and against said sliding bar.
 6. The carrying mechanism to optical pickup of a traverse of optical disc apparatus as defined by claim 3, wherein an adjustable screw used to adjust the height of said sliding bar is screwed through said traverse into said receiving chamber of said integrally formed bar holder and against said sliding bar. 